/*
 * This file contains code from "C++ Primer, Fourth Edition", by Stanley B.
 * Lippman, Jose Lajoie, and Barbara E. Moo, and is covered under the
 * copyright and warranty notices given in that book:
 *
 * "Copyright (c) 2005 by Objectwrite, Inc., Jose Lajoie, and Barbara E. Moo."
 *
 *
 * "The authors and publisher have taken care in the preparation of this book,
 * but make no expressed or implied warranty of any kind and assume no
 * responsibility for errors or omissions. No liability is assumed for
 * incidental or consequential damages in connection with or arising out of the
 * use of the information or programs contained herein."
 *
 * Permission is granted for this code to be used for educational purposes in
 * association with the book, given proper citation if and when posted or
 * reproduced.Any commercial use of this code requires the explicit written
 * permission of the publisher, Addison-Wesley Professional, a division of
 * Pearson Education, Inc. Send your request for permission, stating clearly
 * what code you would like to use, and in what specific way, to the following
 * address:
 *
 *  Pearson Education, Inc.
 *  Rights and Contracts Department
 *  75 Arlington Street, Suite 300
 *  Boston, MA 02216
 *  Fax: (617) 848-7047
*/

#include "io_preamble.h"

void f2()
{

	ostringstream format_message;
	format_message << "val1: " << 512 << "\n"
				   << "val2: " << 1024 << "\n";
	istringstream input_istring(format_message.str());
	int val1 = 0;
	int val2 = 0;
	input_istring >> val1 >> val2;
	input_istring.clear();
	string dump;
	input_istring >> dump >> val1 >> dump >> val2;
	cout << val1 <<  " " << val2 << endl;
}

int main()
{
	int val1 = 512, val2 = 1024;
	ostringstream format_message;

	//  ok: converts values to a string representation
	format_message << "val1: " << val1 << "\n"
				   << "val2: " << val2 << "\n";
	cout << format_message.str() << endl;

	{
		// str member obtains the string associated with a stringstream
		istringstream input_istring(format_message.str());

		string dump;  // place to dump the labels from the formatted message

		// extracts the stored ascii values, converting back to arithmetic types
		input_istring >> dump >> val1 >> dump >> val2;

		cout << val1 << " " << val2 << endl; // prints 512 1024
	}

	f2();  // call f2, which prints val1 and val2 again

	{
		istringstream input_istring;   // empty istringstream
		// bind input_istring to string held in format_message
		input_istring.str(format_message.str());
	}
	return 0;
}

// Sample code to use getline and istringstream to read a line of text
// and then process the line a word at at time
void f3()
{
	string line, word;    // will hold a line and word from input, respectively

	while (getline(cin, line)) {    // read a line from the input into line
		// do per-line processing
		istringstream stream(line); // bind to stream to the line we read
		while (stream >> word) {    // read a word from line
			// do per-word processing
		}
	}
}
